SPINK1 Prostate Cancer Researchers (IMAGE) Michigan Medicine - University of Michigan Caption Arul Chinnaiyan (standing) and Scott Tomlins of the University of Michigan Health System conduct research on prostate cancer. Their team has identified traits of an aggressive type of prostate cancer that occurs in about 10 percent of men who have the disease. Credit Martin Vloet, University of Michigan Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.